Comber doffer-brush.



H. O. NELSON. COMBER DOFFER BRUSH. APPLICATION man 1uLY29.1s15.. asuawm MAR. 2a. 1918.

Patented May 14, 1918.

entrain srarns rna nwr orrron.

HARMON O. NELSON, F WHITINSVILLE, MASSACHUSETTS, ASSIGNOR TO THE WHITIN MACHINE WORKS, OF VVHITINSVILLE, MASSACHUSETTS, A CORPORATION OF MASSA CHUSETTS.

COMBER BUFFER- BRUSH.

Application filed July 29, 1915, Serial No. 42,486. Renewed March 28, 1918.

To all whom it may concern:

Be it known that I, HARMON O. NELSON, a citizen of the United States, residing at Whitinsville, in the county of Worcester and State of Massachusetts, have invented the following described Improvements in Comber Dofier-Brushes.

It has heretofore been proposed to make the scavenger brushes of cotton combers in two halves or sections capable of application to and removal from the rotary comber brush shaft without removal of the latter from the machine. Such a scavenger brush is shown in the application of E. A. Rooney, filed August 10, 191%, Ser. No. 855,967. In that brush and in some others which are not removable, crevices are present in the end faces of the hubs of the brushes between the united sections, into which crevices and upon the entrance thereto, cotton fly and lint collects to a very objectionable extent, and these accumulations if not properly removed work up into the comb cylinder and thence enter the combedlap, to its serious impairment. Rounding or smoothing of the margins of the crevices does not suffice to remedy the difficulty, nor can it be corrected by fitting the sections more accurately together and to the brush shaft because of the clearance that is necessary in order to get a firmly clamped connection. I have succeeded in preventing the accumulation of lint at the brush hubs of removable sectional brushes, such, for example, as shown in the application referred to, by providing the clamping ring with a shroud flange which fits the brush shaft snugly and covers up the hub crevices, leaving no opening whatever in the end face of the brush and no opening elsewhere on the hub, which will collect lint or fly. This effect is apparently due to the obstruction by the shroud flange of the air passage through the space or crevice between the opposing hub sections and the elimination of all passages elsewhere into which air may be drawn when the brush is in action. The invention thus consists in the organization of the separable brush connections with a shroud flange on the locking ring which fits the brush shaft and obstructs inward movement of air through or between the assembled parts of the hub, as will more fully appear from the accompanying drawings, in which Figure 1 represents an elevation of a Specification of Letters Patent.

Patented May 14., 1918.

Serial No. 225,365,

comber dofter brush with intermediate parts broken away and with one end shown in section.

Fig. 2 is a section on line IIII of Fig. 1, showing the shroud flange in elevation; and

Fig. 3 is an elevation of the two ends of the brush sections before the ring and shroud flange are applied.

The brush shaft is marked 1, and is to be understood as the usual brush shaft in Heilmann type cotton combers, which besides rotating, has an endwise traverse movement intended to cause the brush to wear evenly. The journals 2, in which this shaft is mounted, are separated from each other far enough to accommodate such endwise traverse and also far enough to permit the looking rings 3 to be slipped off of the brush stock hubs at one end or the other, as will later appear. The cylindrical brush 4 is formed of two semi-cylindrical brush stocks made of wood, and provided with circular rabbets 6 at their ends. Semi-circular shoes 7 are fitted to these rabbets and held to the ends of the wooden stocks by means of screws 8, as indicated more particularly in Fig. 3. When the two brush stocks thus equipped with semi-circular metal shoes at their opposite ends are placed upon and around the brush shaft, the locking rings 3 are then slipped over the shoes and pushed into contact with the end wall of the wooden rabbet 6, whereupon the set screws 9 in the said ring are screwed inwardly finding a durable bearing against the metallic shoes 7, and clamping them firmly upon the shaft. The locking rings 3 are formed in one piece with their shroud flanges 33, and the latter are fitted to the brush shaft and assembled in pairs thereon between the bearings 2, when the brush shaft is installed in the frame of the comber. When secured to the shoes, as shown in Figs. 1 and 2, they completely cover the otherwise open crevices indicated at 10 in Fig. 2, between the opposing metallic shoes 7 and by reason of the close contact between the locking ring and the shaft, as well as with the wall of the rabbet, all access of air into or from the crevices between the parts of the assembled hub are effectually closed. The tapped holes for the set screws 9 being occupied completely by the latter, do not accumulate lint, and inasmuch as these screws are disposed (all face of ihe locking ring,

in the peri they are re the cornber. l ZHOVG the brush these screws the rings Slipped of the shoes and. ections separated. designing the rings of about r indicated, ample clean ance for the la: purpose is available Withont shortening the r off the brush.

It will he observes what he Wooden or J stocks do not of inenis accessible Ironi the of ienever 1; is cleaner: to re loosened,

elves have coir lare held ihereo solely through the iiiceriei ion metallic shoes "2, which are clainnee shaft ie the locking ring, 0e noceo that the loc on the shaft, the flange tlicrenltln her v serve co center and. brush on 'fihe shaft While 1 invention what is shoes on the assembled EEOClCS flanges on saicl rings oostrncenti oi air to ine crevices between Silifl aalgacent shoes.

'Ehe con1h1nal1o. 111 a cotton coriher i a cloiienhrnsh s do l-er lrnsh thereon adapted to he YQQIO iiereironi WELDOUQ Withdrawal of i the coinloer and comprised assembled hruslrstoclis I cl the brush shaf; each brush siocl: being provided "with metal shoes secured in rabhet grooves at its opposite ends, a locking ring having a shroud flange fitted co the brush shaft saicl ring being adapted to he slid along the said shaftand. slipped on and 01? the metal shoes anal proviclecl with means for clamping said shoes against the shaft.

The combination in a cotton coniher of a clo'lier brash shaft, a clofier brush thereon comprising two 1) 'ush stoclis embracing the brush shaft, each having metallic shoes perr anently secnrecl to its opposie ends, and se-icl shoes being adapted in engage the sh- "ft, a pair of locking rings encircling the lit and A ptecl'to engage ihe adjacent EUOQS on the assembled brush stocks, saicl having shroud flanges integrally thereon and. adapted to obstruct oi lo the crevices between said she and a set screw in the peripheral iace each ring wanted to engage said shoes to clamp the same upon the shaft.

The combination in a cotton somber, a ier brush shaft, a clofier brush thereon removable therefrom Without Withdrawrte ends, a locking ring ne'tal pnos cl flange fitted to the brush ,h s being adapted to engage the n" s the end Wall oi the rahbet 5 pro clecl Wli'll means on its peee for clamping saicl shoes iafi, whereby the shroucl therecr-evices in she acl 'acent shoes. n whereof, I have signed this the presence of. two Wit HAELMOE Q. NELSOT.

"' Joni "iissioner o 

